CN211190137U

CN211190137U - Rotary photocatalytic reactor

Info

Publication number: CN211190137U
Application number: CN201921441174.6U
Authority: CN
Inventors: 朱蔚; 冯嘉炜; 周伟; 朱彦兆
Original assignee: Jiangsu Kangrun Purifying Technology Co ltd
Current assignee: Jiangsu Kangrun Purifying Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-08-07
Anticipated expiration: 2029-08-30

Abstract

The rotary photocatalytic reactor consists of a light emitting device, a reaction tube and a rotating device and is used for researching the photocatalytic degradation of pollutants in a liquid system. When the instrument is operated, the light-emitting device generates light with specific wavelength and irradiates the reaction tube which is positioned on the rotating device and is loaded with the photocatalyst film, the device uniformly receives the light to the solution in the reaction tube because of rotating around the light source at a constant speed, and various information related to the photocatalytic degradation of pollutants can be obtained through analyzing the reaction liquid. The instrument has the advantages of reasonable structure, simple and convenient operation, capability of rapidly completing batch tests under various conditions, reduction of test operation errors and the like.

Description

Rotary photocatalytic reactor

The technical field is as follows: the invention relates to a rotary photocatalytic reactor, belonging to the field of environmental protection and advanced manufacturing technical equipment.

Background art: the photocatalytic pollution treatment technology taking semiconductor materials as a core is a novel green and environment-friendly technology, has the advantages of high treatment efficiency, no secondary pollution, no toxicity and the like, is more and more concerned by people, but is still in the theoretical and experimental research stage at present, and has some problems which puzzle the practical application of the technology. These problems include: the efficiency of photocatalytic treatment is low, the effect of the photocatalyst using sunlight as a light source is poor, and the form and the mode of the photocatalyst in actual use are the same. To solve these theoretical and practical challenges, a large number of small experiments are necessary to solve the problem.

In recent years, small-sized equipment for photocatalytic treatment of wastewater and waste gas has been reported at home and abroad, but most of the small-sized equipment is in the literature, and most of the small-sized equipment is designed and manufactured respectively and is relatively crude. The results obtained are difficult to compare with each other, since the test equipment is different. Therefore, the development of a small-sized photocatalytic reactor with advanced technology, small size, rapidness, easy operation and low cost is imperative.

The invention content is as follows:

the utility model aims at: a small-sized photocatalytic reactor combining an advanced photocatalytic technology and a mechanical transmission technology is developed and used for researching photocatalytic degradation of pollutants in a liquid system. The instrument has the advantages of reasonable structure, simple and convenient operation, capability of rapidly completing batch tests under various conditions and the like, thereby greatly improving the research and development efficiency and providing reliable test results.

The purpose of the utility model is realized like this: the instrument consists of a light-emitting device, a reaction tube and a rotating device. When the instrument is operated, the light-emitting device generates light with specific wavelength and irradiates on the reaction tube which is positioned on the rotating device and the inner wall of which is loaded with the photocatalyst, the device rotates around the light source at a constant speed, and the solution in the reaction tube uniformly receives the light to catalyze and decompose the pollutants, so that various information about the degradation of the pollutants can be obtained.

The light-emitting device comprises a lamp light source, a quartz cold trap and a filtering device. The lamp light source mainly comprises mercury lamps and xenon lamps, and the mercury lamps can provide ultraviolet light with larger energy and are commonly used for compounds difficult to degrade; the spectrum of the xenon lamp is close to the daylight, and a photocatalysis test for simulating pollutants under sunlight can be carried out; the lamp light source is arranged in the quartz cold trap with a double-layer structure, and the heat generated by the lamp can be taken away by introducing cooling water into the interlayer; in addition, the quartz material can transmit ultraviolet light, so that the light-emitting wavelength of the light source is not influenced; the filter device is capable of selecting light of a desired wavelength from the light source spectrum.

The reaction tubes are a group of quartz test tubes with plugs, the specifications of the capacities (namely the inner diameter and the height) of the reaction tubes are different, and a transparent catalyst film which can respond to visible light and an unsupported catalyst are loaded on the inner wall of the reaction tubes for selection.

The rotating device is complex in structure and comprises a motor, a turntable, a screw rod, a gear, an adjusting wheel, a chain, a rotating cylinder and the like. Except that the chain is made of stainless steel, other parts are made of aluminum alloy materials, and the surface of the chain is subjected to blackening treatment. The rotating speed of the motor is reduced by changing the speed of the large-diameter gear and the small-diameter gear, and the rotating disc rotates stably. The height of the turntable can be changed by adjusting the lifting adjusting wheel on the screw rod so as to change the lighting position of the quartz test tube with the plug.

The beneficial effects of the utility model are that ① because a test can go on at 1 ~ 18 utensil stopper quartz test tubes simultaneously (test tube quantity is decided as required), therefore compare with the experiment that can only illuminate 1 container, then can improve work efficiency greatly, also can reduce experimental human error, ② because the lamp light source that this instrument provided, the variety and the specification of utensil stopper quartz test tube are more complete, consequently can carry out the photocatalysis degradation test through changing a plurality of conditions (such as the kind of light, catalyst, reaction time and concentration etc.), thereby applicable multiple demand's research, be particularly suitable for the research of reaction kinetics, ③ because this instrument goes out data easily, and convenient operation can be used to the scientific research and the places such as universities and universities teaching relevant with environmental protection.

Description of the drawings:

FIG. 1 is a schematic view of a rotary type photocatalytic reactor;

FIG. 2 is a schematic cross-sectional view of quartz cold hydrazine;

FIG. 3 is a schematic view of a filter apparatus;

FIG. 4 is an illustration of an upper turntable;

FIG. 5 is a schematic cross-sectional view of a rotating portion;

in the figure: 1 lamp light source, 2 quartz cold hydrazine, 201 intermediate layer, 202 inlet tubes, 203 outlet pipes, 3 optical filtering equipment, 301 support, 302 optical filters, 303 connecting rods, 4 groups of quartz reaction test tubes with plugs, 5 upper rotating discs, 501 round holes, 502 small holes, 6 middle rotating discs, 7 lower rotating discs, 701 shallow concave circles, 702 small holes, 8 base discs, 801 column shafts, 9 lifting adjusting wheels, 10 screw rods, 11 rotating cylinders, 12 large gears, 13 small gears, 14 transmission chains, 15 motors, 16 motor rotating rods and 17 motor supporting rods.

The specific implementation mode is as follows:

1. characterization and fabrication of parts of instruments

The shape and structure of a rotary type photocatalytic reactor are shown in figure 1, and the reactor comprises a light-emitting device, a reaction tube and a rotating device, wherein the length × of the reactor, the width × of the reactor and the height are about 350 × 300, 300 × 550 and 550mm, and parts of the reactor are commercially available and entrusted.

The light-emitting device comprises a lamp light source (1), a quartz cold trap (2) and a filter device (3), wherein the lamp light source (1) is a low-voltage, medium-voltage or high-voltage mercury lamp with different powers of 300-2000W and a corresponding ballast, or a xenon lamp with different powers of 300-2000W and a responding ballast; quartz cold trap (2) is shown in FIG. 2, and is used for placing lamp light source, and has an outer diameter of 50mm, a length of 400mm, a thickness of 10mm in interlayer (201), and a closed end. The upper end of the interlayer is provided with a water inlet pipe (202) and a water outlet pipe (203), the water inlet pipe directly reaches the lower end of the interlayer, and cooling water is introduced to take away heat generated by the lamp light source (1). The quartz cold trap is made of quartz glass which can transmit ultraviolet light and visible light, and does not influence the transmission of light with different wavelengths; the structure of the filter device (3) is shown in figure 3, 4 surfaces of a bracket (301) of the filter device can be inserted with 0-4 optical filters (302) so as to transmit light with the wavelength required by the photocatalytic reaction, the length and the width of each optical filter are 65mm, and the filter device is fixed on a motor support rod (17) through a connecting rod (303).

The reaction tube is an 18-support quartz test tube (4) with a plug, the volumes of the reaction tube are respectively 50m L and 25m L, the lengths of the reaction tube and the reaction tube are both 120mm, one inner wall of the reaction tube is loaded with the high-efficiency photocatalyst film, and the other inner wall of the reaction tube is not loaded and can be selected.

The rotating device is complex in structure and comprises an upper motor rotating disc (5), a middle rotating disc (6), a lower rotating disc (7), a chassis (8), a column shaft (801), a lifting adjusting wheel (9), a screw rod (10), a rotating cylinder (11), a large gear (12), a small mm gear (13), a transmission chain (14), a motor (15), a motor rotating rod (16), a motor supporting rod (17) and the like.

The upper rotary disc (5) of the rotating device is a hollow disc with the outer diameter of 280mm and the edge width of 85mm as shown in a figure (5), and a round hole (501) with the diameter of 18 mm is formed in the position 15mm away from the outer side of the round surface and used for inserting the quartz test tube (4) with the plug. 3 small holes (502) are formed in the circular surface at an equal distance of 60mm from the outer side for fixing the upper ends of 3 screws (10) with the length of 180 mm; the shape and size of the middle rotary disc (6) of the rotating device are the same as those of the upper rotary disc (5), and 18 shallow holes are formed at the positions corresponding to the positions (501) so as to fix the bottom end of the quartz reaction test tube (4) with the plug. 3 holes corresponding to the holes (502) are also formed for the screw rod (10) to pass through; the lower rotary disc (7) of the rotating device has the same shape and size as the upper and middle rotary discs, but is not hollow. A shallow concave circle (701) is arranged at the center of the upper surface of the turntable and used for fixing the bottom end of the quartz cold trap (2). And 3 holes corresponding to the holes (502) are formed for fixing the lower ends of the screws (10). A rotary drum (11) is fixed at the center position below the turntable, and the inner diameter of the drum is 5mm, and the height of the drum is 4.5 mm. A large gear (12) is fixed outside the rotary cylinder by screws; the chassis (8) of the rotating device is in an oval shape, the diameter of the X axis of the rotating device is 350mm, the diameter of the Y axis of the rotating device is 300mm, a column shaft (801) with the diameter of 48mm and the height of 40mm is fixed on the right part of the center, a motor rod (17) for supporting a motor (15) and a motor rotating rod (16) with a small gear (13) are further fixed.

2. Instrument assembly and commissioning

The upper ends of 3 screw rods (10) are fixed at the small holes (502) of the upper turntable (5) by nuts, then the middle turntable (6) is sleeved in from the lower end of the screw rods, meanwhile, the screw rods are screwed in the lifting adjusting wheels (9), the 3 adjusting wheels are connected by the transmission chains (14), and then the lower ends of the screw rods are fixed on the small holes of the lower turntable (702). After the dress, because the top surface contact of well carousel and 3 lift adjustment wheels, as long as adjust wherein 1 lift adjustment wheel will drive 2 other lift adjustment wheels and remove to the lift of carousel in the drive, the distance of going up between carousel and the well carousel is about 130mm usually, makes to carry and has to fill in the quartzy test tube of utensil and can effectively accept illumination.

Then a rotary cylinder (11) fixed at the lower end of the rotary disk (7) is sleeved on a column shaft (801) of the chassis (8), and a small gear (13) and a large gear (12) are linked by a transmission chain (14); the filtering device (3) is arranged in the middle of the upper turntable (5) and the middle turntable (6), the filter (302) is inserted into the bracket (301), and the filtering device is fixed on the motor support rod (17) by the connecting rod (303); placing the quartz cold trap (2) of the lamp light source (1) in the center of the light filtering device (3) to enable the bottom of the quartz cold trap to enter a shallow concave circle (701) of the lower turntable (7); inserting a plurality of support plug quartz reaction test tubes (4) into round holes of an upper turntable (5); starting a motor (15), wherein the rotating speed of the motor is changed through the linkage of a pinion (13), a bull gear (12) and a transmission chain (14), so that a rotating shaft drives a turntable to rotate at the speed of 4.5 revolutions per minute; the cooling water and the lamp light source (1) are started, preheating is carried out for 3min, and the instrument enters a working state.

Claims

1. The utility model provides a rotary-type photocatalytic reaction appearance which characterized in that this instrument comprises illuminator, reaction tube and rotary device for the photocatalytic degradation of pollutant in the research liquid system, the illuminator of instrument includes: the device comprises a lamp light source (1), a quartz cold trap (2) and a filtering device (3); the reaction tube of the instrument is a group of quartz reaction test tubes (4) with plugs, and the inner wall of the reaction tubes is loaded with a nano high-efficiency photocatalyst film; the rotation device of the instrument comprises: the device comprises an upper turntable (5), a middle turntable (6), a lower turntable (7), a chassis (8), a lifting adjusting wheel (9), a screw rod (10), a rotating cylinder (11), a large gear (12), a small gear (13), a transmission chain (14), a motor (15), a motor rotating rod (16), a motor supporting rod (17) and the like.

2. The rotary type photocatalytic reactor according to claim 1, characterized in that: the lamp light source (1) is a tubular low-pressure mercury lamp, a medium-pressure mercury lamp or a high-pressure mercury lamp or a tubular xenon lamp, the power of the lamp is different in specification from 300W to 2000W, and each lamp needs to be provided with a corresponding ballast.

3. The rotary type photocatalytic reactor according to claim 1, characterized in that: the quartz cold trap (2) is used for placing a lamp light source, is a quartz tube with one closed end and an interlayer, and can transmit ultraviolet light and visible light emitted by the lamp light source; the upper end of the interlayer is provided with a water inlet pipe which directly reaches the lower end of the interlayer; the upper end of the interlayer is additionally provided with a water outlet pipe, and cooling water is introduced to take away heat generated by the lamp.

4. The rotary type photocatalytic reactor according to claim 1, characterized in that: the filter device (3) is fixed on the motor support rod (17) and has 4 surfaces for inserting 0-4 required filters to select light with required wavelength in the light source spectrum of the lamp.

5. The rotary type photocatalytic reactor according to claim 1, characterized in that: the upper rotary disc (5) of the rotating device is a hollow disc, a group of cylinders are equidistantly arranged on the concentric circular arc of the disc and are used for inserting quartz reaction test tubes (4) with plugs; the other concentric circular arc of the disc is equidistantly provided with 3 small holes for fixing the upper ends of 3 screw rods (10) by nuts.

6. The rotary type photocatalytic reactor according to claim 1, characterized in that: the middle rotary table (6) of the rotating device is also a hollow disc, and shallow holes are formed in the positions of the round holes corresponding to the upper rotary table (5) and used for plugging the bottom end of the quartz reaction test tube (4) by a fixing tool; 3 holes corresponding to the upper turntable (5) are respectively opened for the screw rod (10) to pass through; in addition, 3 lifting adjusting wheels (9) are screwed in from the lower end of the screw (10) to reach the lower surface of the middle turntable (6); 3 lift adjustment wheel (9) link to each other with drive chain (14), adjust wherein 1 lift adjustment wheel's position just can drive 2 other lift adjustment wheels simultaneously and reciprocate to change the height of well carousel (6), also can change the daylighting position that utensil stopper quartz reaction test tube (4).

7. The rotary type photocatalytic reactor according to claim 1, characterized in that: a shallow concave circle is formed in the center of the upper surface of a lower turntable (7) of the rotating device to fix the bottom end of the quartz cold trap (2); 3 small holes corresponding to the upper rotary disc (5) are respectively drilled for fixing the lower end of the screw rod (10); a rotary cylinder (11) is fixed at the center position below the lower rotary disc (7), and a large gear (12) is fixed at the lower end of the outer side of the rotary cylinder by screws.

8. The rotary type photocatalytic reactor according to claim 1, characterized in that: a column shaft (801) is fixed in the center of the upper surface of a chassis (8) of the rotating device and is used for a rotating cylinder (11) fixed on the lower turntable (7) to be inserted from top to bottom in a reverse direction, and a large gear (12) is also fixed on the rotating cylinder; a motor support rod (17) is also fixed on the chassis (8) of the rotating device to support the motor (15), and a motor rotating rod (16) with a pinion (13) is also fixed; the big gear (12) and the small gear (13) are connected through a transmission chain (14), and when the motor is started, the small gear (13), the big gear (12), the rotary cylinder (11), the lower turntable (7) and other parts are driven to rotate.

9. The rotary type photocatalytic reactor according to claim 1, characterized in that: parts of an upper turntable (5), a middle turntable (6), a lower turntable (7), a chassis (8), a lifting adjusting wheel (9), a screw (10), a rotary cylinder (11), a large gear (12), a small gear (13), a motor rotating rod (16), a motor supporting rod (17) and the like of the instrument are all made of aluminum alloy materials, and the surfaces of the parts are blackened; the transmission chain (14) is made of stainless steel.